Controlling-valve for conduit-pipes.



L. A. DRAGO.

CONTROLLING VALVE FOR CONDUIT PIPES.

APPLICATION FILED AUG-161N115.

Patented Sept. 12, 1916.

2 SHEETSSHEET 2.

IV VE IV TOR L 01113 Augustus .Dlugo 1 B Y W644 ,4 TTOH/VEY WITNESSZES:

UNITED sTArEs PATENT OFFICE.

LOUIS A. DRAGO 'OF SEATTLE, WASHINGTON.

CONTROLLING-VALVE FOR CONDUIT-PIPES.

To all whom it may concern:

Be it known that I, LOUIS A. DRAGO, citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented a certain new and useful Improvement in Controlling-Valves for Conduit-Pipes, of which the following is a specification.

My invention relates to improvements in devices for controlling the rate of flow of fluid fuel, and a supply of air under pressure, or steam, for purpose of combustion, through conducting pipes. from a source of supply to the point ofcombustion of such fuel, and the object of my invention is to provide a simple and reliable operative regulating mechanism that shall be adapted to be connected with air or steam-pipes and fluid fuel supply pipes which lead from a source of supply to a point of combustion and which shall be adapted to be operated to control and regulate the rates of flow of the air or steam and the fluid fuel through such pipes, respectively, whereby proper proportions of such combustive agents may be constantly supplied at such point of combustion. I attain this object by devices illustrated in the accompanying drawings wherein- Figure 1 shows a structure embodying my invention by a view partly in vertical midsection and partly in side elevation; Fig. 2 is a view in side elevation of a modified form of my invention; and Fig. 3 is a view of parts of the same in vertical section on broken line :0, w of Fig.2.

Referring to the drawings, throughout which like reference numerals indicate like parts, a body portion comprising a hollow metal casting 5 is provided with oppositely disposed inlet nipples 6 and 7 extending from its sides and with an upwardly extending outlet nipple 8, its interior being divided by an obliquely disposed partition 9 which is provided with an integral boss 10 having a screw-threaded opening therein, and within which is disposed an externally screw-threaded nozzle 11 having a tapered upper end that projects vertically upwardly from the top surface of the boss 10, said nozzle 11 being thus adapted for vertical adjustment with respect to the position of the flaring open lower end of a concentrically disposed tube 12 which is fixed within the outlet nipple 8. Connecting with the upper end of the nipple 8 is a pipe 13 which Specification of Letters Patent. Patented Sept. 12, 1916. Application filed August 16, 1915.

Serial No. 45,736. p

extends upwardly and to whose upper end is fixed a burner-tip 14 of wellknown form.

Two valves 15 and 16 of like form of construction are connected respectivelyto nipples 6 and 7 by unions '17 and 18 respectively. Screwed intotheunderside of valves 15 and 16', respectively, are bushings 19 and 20, to whichare secured, by nuts 21 and 22,

downwardly projecting channel guide brackets 23 and 24 respectively,'aud slidably disposed .to extend downwardly through said bushings 19,and and through the lower ends of said guide brackets 23 and 24 respectively are valve-spindles 25 and 26 of the valves 15 and 16.

Normally to maintain the valves 15 and 16 closed the valve-spindles. 25 and 26 are provided with a screw-thread and on said valve-spindles 25 and 26, between the lower ends of the brackets 23 and 24 and the bushings 19 and 20, are disposed helical compression springs 27 and 28, respectively, whose tension may be adjusted by adjusting nuts 29 and 30. On the lower end of each of the valve-spindles 25 and 26 is an adjusting nut 31 and a check-nut 32 which ad usting nut 31 may serve to raise and lower a sleeve 33,,

one of which is slidably mounted on'each ofthe valve-spindles 25 and 26 and each of the sleeves 33 are provided with studs, as stud 34, which project from opposite sides thereof and resting uponsaid studs 3 10f each of the sleeves 33 is the bifurcated end of a lever, as levers'35 and 36 which levers 35 and 36 each engages with an adjustably movable -fulcrum, as fulcrums 37 and 38 which are slidably mounted in the underside of a bracket 39 secured to the bottom of the hollow metal casting 5 and which fulcrums 37 and 38 may be each independently moved nearer to or farther from the respective valve-spindles 25 and 26 by means of adjustingi screws 40 and 41.

he inner ends of the levers 35 and 36 project into a groove formed in a sleeve 42 which is provided with an internal screwthread and rotatably mounted on a screwthreaded stud 43 fixed in the central portion of the underside of the bracket 39 to extend downwardly therefrom, and the sleeve 42 is provided with an integral hand-wheel 44 which may be turned as required to raise or lower the inner ends of the levers 35 and 36 whereby the valve-spindles 25 and 26- may be simultaneously raised or lowered to close the valves 15 and 16 or to open them to a de-- sired degree, thus to controlthe'flow of fluid therethrough.

A pipe 45 is connected to the valve 15 by means of a coupling 46 and a pipe 47 is connected to the valve 16 in like manner by a coupling 48. The pipe may lead to a source of compressed air or to a source of steam, while the pipe 47 may lead to a source of fluid fuel, as mineral oil.

The operation of the structure shown in Fig. 1 and thus described is as follows: The hand-wheel 44 is turned to raise the sleeve 42 to actuate the levers 35 and 36 to cause the valve-spindles and 26 slightly to open the valves 15 and 16 whereupon steam or compressed air will flow through the valve 15 into the metal casting 5,thence through the nozzle 11 to pass upwardly in the form of a jet through the tube 12 thence through the pipe 13 to be emitted from the burner tip 14, while fluid fuel from the pipe 47 will flow through the valve 16 into the upper compartment ofthe metal casting 5, thence to enter the flared mouth of the tube 12 where it mixes with the steam or air issuing from the nozzle 11 to flow thence through said tube upwardly through the pipe 13 and out of the burner-tip 14, and the fluid fuel thus mixed with steam or compressed air may then be ignited to burn.

The adjusting screws 40 and 41 may each be independently turned to adjust the positions of the respective fulcrums 37 and 38 whereby the valves 15 and 16 respectively may admit proper proportions of fluid fuel and steam. or compressed air, which proper proportions may be constantly maintained irrespective of changes in the position of the sleeve 42 the position of which determines the amount of the mixture of the fluid fuel and steam or compressed air which reaches the point of combustion.

In Fig. 2 I have shown a modified structure which in all respects is like the structure of Fig. 1, except that in place of the burner-tip 14, the pipe 13, the tube 12, the nozzle 11 and the metal casting 5 of Fig. 1, I have employed a hollow casting 49 whose interior space is divided by a partition 50 to form two chambers 51 and 52 which cor respond to the spaces above and below the partition 9 in the hollow casting 5 of Fig. l, and except also in place of the stud 43, the sleeve 42 and the hand-wheel 44 of Fig. 1, I have employed other means for controlling the positions of the ends of the levers 35 and 36 of said Fig. 1.

In the device of Fig. 2, a pipe 53 connects with the chamber 51 while a pipe 54 connects with the chamber 52, which pipes 53 and 54 may extend to a suitable fuel oil burner, not shown, and the flow of steam or compressed air through the pipe 53 and the flow of fluid fuel through the pipe 54 may be controlled by the valves 55 and 56 which correspond to the valves 15 and 16 respectively of Fig. 1. In order to control the valves and by the means of levers 57 and 58 (which correspond to levers 35 and 36 of Fig. 1) I have provided a circular member 59 integrally associated with a bracket 60 which corresponds with the bracket 39 of Fig. 1, and pivotally mounted in the center of the circular member 59 is a bifurcated cam lever (31 which is provided with a friction member 62 which is dis posed to frictionally engage with the periphery of said circular member 59 in response to the pressure of a helical compres sion spring 63 disposed within the handle of the cam lever 61 as indicated by dotted lines in Fig. 3, which friction member 62 may serve to maintain said cam lever 61 in a desired angular position with respect to said circular member 59. On each side of the circular member 59 and integral with the cam lever 61 is a cam, as cams 64 and 65, which cams 64 and 65 are adapted to engage with the ends of the levers57 and 58, respectively, whereby swinging movements of the cam lever 61 may serve to actuate said levers 57 and 58 to control the operation of the valves 55 and 56 in an obvious manner thus performing the same function that is performed by the sleeve 42 and handwheel 44 of Fig. 1.

The structures of Figs 2 and 3 may. be employed for controlling the flow of different kinds of fluids from separate sources of supply of such fluids to any desired point of consumption through pipes as pipes 53 and 54, the relative rates of flow of such fluids in said pipes 53 and 54 being maintained in constant proportions irrespective of changes in the combined amounts of flow of such fluid.

Manifestly, changes may be made in the forms, dimensions and arrangement of parts of my invention without departing from the spirit thereof.

WVhat I claim is:

I 1. A device for controlling the flow of fluids through two supply pipes each of which communicates with a common mixing chamber, which device embodies two supply pipes; two valves, each having an outwardly projecting valve'spindle and each disposed to control the flow of fluid through a different one of said supply pipes; a channel guide bracket fixed to each valve, with the valve spindle extending therethrough, an adjustable nut mounted on each valve on each valve spindle, expansion coil springs on the spindle between the nuts and lower ends of the channel brackets to hold the valves normally seated, a supporting bracket in fixed association with said pipes and said valves; an adjustably movable collar mounted on each of said valve spindles; two levers each having one of its ends in operative en- 1" gagement with one of said collars; two adjustably movable fulcrums mounted on said bracket and adapted each to engage with a different one of said levers at any desired one of different points thereon; and manually operative means for simultaneously actuating both of said levers.

l. A device for controlling the flow of fluids through two supply pipes that communicate with a common point of delivery, which device embodies two supply pipes; two valves each having an outwardly projecting valve spindle and each disposed to control the flow of fluid through a different one of said supply pipes; a supporting bracket in fixed association with said pipes and said valves; a channel guide bracket fixed to each valve, with the valve spindle extending therethrough, an adjustable nut mounted on each valve spindle, expansion coil springs on the spindle between the nuts and lower ends of the channel brackets to hold the valves normally seated, a screwthreaded stud fixed in said bracket; a movable sleeve disposed on said stud; adjustably movable collars mounted each on a different one of said valve spindles; two levers each having one of its ends in operative engagement with said movable sleeve on said stud while its other end is in operative en 

